Catalyst with Shayle Kann · 2026-06-04 · 44 min
While global electricity demand is unquestionably rising, we may nonetheless be underestimating the scale of necessary future generation. In this episode, Shayle speaks to Nic Fulghum, senior energy and climate data analyst at Ember. Nic is the co-author of Ember’s annual Global Electricity Review. This year’s installment, released in April, demonstrates that renewable sources - and solar in particular - are continuing to grow exponentially, even as those markets mature. In 2025, solar generation grew by a remarkable 30% year-over-year globally; its highest rate in eight years. At the same time, global fossil generation declined in 2025, driven by drops in coal generation in both China and India. But as solar surges, how quickly grid-connected batteries can step in to absorb peak demand remains to be seen. In their conversation, Shayle and Nic dive deep into the data behind global electricity generation in 2025 and consider the future of the grid.
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